GoMMC allows you to store all your software on a single MMC (MultiMedia Card).
Move all your floppies, harddiscs and tapes to the MMC, give them names, and
use them just like before (via the same filing systems).

Everything is right there. At your fingertips. Simply select the floppy,
harddisc or tape by name, and then use it.

Up to 4 GB of total storage (depending on the capacity of the MMC). More
space than you'll ever be able to use.

Transfers roughly 100 KB per second. I.e. games and the like literally load
in a flash (only half a flash, really).

Works as a completely transparent 'backend' of a variety of standard filing
systems. Choose your favourite one.

Completely silent (no moving parts !). No more worries about the age
related failure of your drives and media.

Batch capable tools for your PC (Windows, Linux, Mac OS) will get your
media on and off the MMC in a jiffy.

GoMMC simply plugs into a free ROM socket in the machine.

GoMMC is succeeded by
GoSDC.
Read about the most important differences between them
here.